Type-writing machine.



BEST AVAILABLE copy UNITED STATES PATENT orrron.

JAMES F. IVICBIRNEY. OF HARTFORD, CONNECTICUT, ASSIGNOR. TO ROYALTYPEWRITER COMPANY, OF NE'W YORK, N. Y., A CORPORATION OF NEW JERSEY.

TYPE-WRITIN G MACHINE.

Specification of Letters Patent.

Patented Nov. 28, 1911.

Application filed July 2, 1908. Serial No. 441,540.

- T all whom it may concern.

Be. it, known that l, Janus F. McBinXnY, a citizen of the United Statesof America, residing in Hartford, county of Hartford. and State ofConnecticut, haveinvented certain Improvements in Type-\VritingMachiues, of which the following is a specification.

This invention relates to a new organization comprising means forprovision of any desired number of so-called silent keys in thekey-board. either to the right or left of the longitudinal center of themachine, for printing accents and for other purposes where an impressionis made without feed of the carriage.

ln the accompanying drawing: Figure ,1 is an ele\ ation of the righthandside of a typewriting machine, with the side plate broken away andpartly in section, showing so much of a machine as is desirable to illustrate this invention: Fig. 2, a detail front: elevation showing rockingdevices to which are to be connected links that are operated upondepression of silent-key finger-pieces: Fig. 3, an end elevation of Fig.2: Fig. 4, a detail side elevation: and Fig. 5, a perspective viewshowing a modification of the construction.

This invention is shown applied to the Standard typewriting machine madeby the Royal Typewriter Company and now well known in the market.

1 indicates the platen and 2 is the shift, rail of the carriage in whichthe platen is mounted.

3 is the ribbon vibrator jointed at, 4 to the forwardly extendinghorizontal arm 5 of a hell crank lever whose t-lepending arm 6 is 2connected with a link 7 bifurcated or slotted at its rear end S toembrace a pin it on the suspended universal bar 10 carried in the lowerends of links 11 whose upper ends are pivoted on-shaft 12 mounted in theframe.

'lheselinks are (:OsS connected above the universal bar by a tie rod ll..plate l\' the tie rod and universal bar and when the latter is drawnforward. contacts with the end l4 olthe escapelneut rocker l3 l l"()lt(lat 'i-'-. \Yhen therefore the uniwrsal bar is drawn forward.- the Dinworking against tln end wall of the slot in the roar i e d 9 of link T.arries that link forward to l '1 I :1 v

18 is one ofthe ordinary letter bars operated by a link 19 extendingforward to the end of a push pin 20 to which also is.connected the rearend of a link 21 rocking about a fixed axis or anchor point 22. On thelink 19 in front of the pivot of its type bar is a projection 10 towhich is jointed the front end of alink 10 whoserear end is hooked overthe universal bar 10. A coiled spring serving to hold the parts innormal position has one end connected LO projection 10 and the other toa transverse horizontal plate 25 mounted at the back of the machine. Allthe printing keys that operate the universal bar are similarly arranged.When such a key is depressed the type bar will be pulled to the printingpoint by link i and the universal bar be drawn forward by link 10 toactuate both the ribbon vibrator and escapement.

The construction thus far described is substantially that; of the RoyalTypewriter Companys Standard machine.

Provision for a plurality of so-called silent: keys is made as follows:A rock shaft 93 is mounted to turn in bearings 24 on the horizontalplate 25 havingat each end slotted upturned parts 26 by which the platemay be bolted as at. 27 to the rear part of the frame of the machine.Preferably. this rock shaft is mounted in rear of the universal bar, andis parallel therewith. Centrally secured to the rock shaft is aprojection or wiper arm 28 adapted to strike the rear end of the link 7.As shown it engages a shoulder 8 0n the link. A spring 29 normally tendsto rock the shaft 23, as viewed in Fig. l. in the direction in whichturn the hands of a watch. On each side of the wiper 2S. :1 pair of arms4-9 is secured to the rock shaft and extending between the upper ends ofsuch arms is a rod 30. 31 is the finger piece of a silent key, shown inthis instance as a push pin 32 haviu connected to its lower end a link21 rocking atthe frontabout a fixed point 92'. and also a link 19connected at its rear end to the heel ,of a type bar 3;. Attached to Hlink 19 is a downwardly extending piece I plate 34 to which is jointed alink 36 hooked rear end of which embraces the rrm "-1 n. e 11., u 1, Hi.

pin 31, 32, is depressed, the type bar 33 is thrown to the printingpoint, and the link 36 draws forward the rod 30 rocking the shaft andcarrying for'ward the wiper 28 which, striking the rear end of theribbon vibrator link 7, 8, operates the ribbon vibrator. The escapement,however, remains inoperative since no movement is imparted to theuniversal bar. The rods 30 disposed respectively on opposite sides ofthe center of the machine may be of such length as is desired. The arms49 that carr them are secured to the rock shaft 23 ad ustably by meansof the set screws 38. There is or may be provided thereforeamcans ofconnection for the links 36, of a plurality of silent keys located atany point in the key boardeither to the right or left of the center. Theconstruction is such as to afford the greatest number of silent keysthat could possibly be employed under any circumstances.

l igs. l and 5 show a slight, and indeed an obvious modification of theconstruction. The rod-5 30 are omitted and the rock shaft 23 turns inend bearings 23'. There is adjustably secured upon the rock shaft bymeans of a set screw 39 a plate 40 apcrtured or slotted at 4-1 for thereception of the rear hooked end of a silent key link 36. Any desirednumter of such plates 40 located at any point in the length of the rockshaft may be used. Some one of the plates 10 may have applied to it thespring 29 indicated in Figs. 2 and 4 one cndof the spring bearingagainst the franicof the machine and the other engaging an aperture 4-2in the plate. -10 or the arm 49 asthe case may be. Sccurcdcentrally'upon the rock shaft is an arm or wiper 28 shown, in thisinstance. as long enough to contact with the rear end of the lowerbifurcation at the end of link 7. Of course, the silent key or push pin31, 32 should have a spring to return all parts to normal position. Thisspring maybe arranged or located in any way desired. The drawingimlicatcs nu}: em 'iloyn'ient of a spring 43 connected at its rear orlower end bars, linger pieces, operative connections beto the push pinand a t its front or upper end to the lug t l'conslitutiug the anchor pint of the link '21. The universal bar may be retracted by the spring 50applied to the ribbon vibrator bell-crank.

I claim:

l. The condaination with the platen, type twet-n the finger pieces andtype bars coin- Ifl'lSlXlQ type bar operating links that pull the typebars to the printing point, a nu:-

v -rsal bar. link connections from the major number of the last namedlinks to the universal bar. a ribbon ibrator and est-apemcut i rat rwithout actuation f the escapement and also with means for connection of,a plurality of links extending from some of the type bar operatinglinks.

2. The combination with the platen, type bars, finger pieces, operativeconnections between the finger pieces and type bars comprising type baroperating links that pull the type bars to the printing point, asuspended universal bar, link connections from the major number of thelast named links to the universal bar, a ribbon vibrator and escapementdevices both actuated by the universal bar, a transversely disposedrocking member provided with means for actuating the ribbon vibratorwithout actuation of the escapement and also with means for connectionof a plurality of links extending from some of the type bar operatinglinks.

3. The combination with the platen, typebars, universal bar, escapementdevices and ribbon vibrator devices, of an operating push pin for eachtype bar, two links connected to each push pin, one having its front endmounted to rock about a fixed point and the other having its rear endconnected to its type-bar, a draw link for each of the major number oftype-bars actuated when its type bar is actuated and engaging at itsrear end the universal bar, a transversely arranged member extending onboth sides of the center of the machine, movable back and forth andhaving means for actuating the ribbon vibrator without actuation of theescapemcnt, one or more draw links actuated hen some other of the typebars are actuated and engaging attheir rear ends said movable member.

-l. he combination of a platen, type bars, linger pieces. type baroperating links actuated by the linger pieces to pull the type bars tothe printing point, a universal bar, link connections that correspondwith the major number of linger pieces and are applied to the universalbar and are operated by their respective finger pieces, a ribbonvibrator and escapcment devices actuated by the universal bar, atransversely disposed movable ut-mber provided with means for actuatingthe ribbon vibrator without actuation of the escapemcnt and actuatinglinks that correspond with and are operated by some of the finger piecesand are applied to said u'icmber.

The combination of a platen, type bars, linger pieces, type baroperating links actuated by the finger pieces to pull the type E bars tothe printin point, a universal bar,

link connections that correspond with the ma or number of finger piecesand are applied to the universal bar and are operated F by theirrespective linger pieces, a ribbon devices both .a-tl'uicd by theuniversal bar, a a ll2Ul\"""t'ly disposed rockingmemberpro b means foractuating the ribbon ibralor and escapemeut devices actuated by theuniversal bar, a transversely disposed rocking member provided wlthmeans for v actuating the ribbon vibrator without actuu" we, myrrh ationof the escapement and horizontally disposed actuating links that,correspond with and are actuated by some of the finger pieces and areapplied to said member.

6. In a visible typewriting machine, the combination of platen, a ribbonvibrator, escapcment devices, pivoted type bars, finger piecescorresponding with the type bars, type bar operating devices interposedbetween the finger pieces and their respective type bars, a universalbar, operative connections corresponding with the major number of thefinger pieces and normally engaging the universal bar and operated toactuate it on depression of their finger pieces, means by which theuniversal bar actuates the ribbon vibrator and the escapementdevices, atransversely disposed movable silent key member, means by which saidmember actuates the ribbon vibrator, and operative connections between aplurality of the finger pieces and said silent, key member.

7. In a visible typewriting machine, the combination of a platen, aribbon vibrator,

escapeinent devices, pivoted type bars, finger pieces corresponding withthe type bars, type bar operating devices interposed between the fingerpieces and their respective type bars, a-universal bar, operativeconnections corresponding with the major num ber of the finger piecesand normally engaging the universal bar and operated to actuateit ondepression of their finger pieces, means by which the universal baractuates the ribbon vibrator and the escapement devices, a transverselydisposed movable silent key member, extending on both sides of thehorizontal center of the machine, means by which saidmember actuates theribbon vibrator, and operative connections between a plurality of thefinger pieces and said silent key member.

In testimony whereof, I have hereunto subscribed my name.

- JAMES F. MCBIRNEY. Witnesses:

Fnnnemcic I'IINB VAN AUsDULL, FRED. ELBERT LEWIS.

